Chem Lab 2

Object Length
(cm) Length
(mm) Length
(M)
CD 12cm 120mm .12M
Key 5.3cm 53mm .053M
Spoon 15.5cm 155mm .155M
Fork 19.8cm 198mm .198M

Water Temperature
C° Temperature
F° Temperature
K
Hot from tap 38 C° 100.4 F° 311K
Boiling 93 C° 199.4 F° 366K
Boiling 5 minutes 95 C° 203.0 F° 368K
Cold from tap 15 C° 59 F° 288K
Ice water 1 minute 8 C° 46.4 F° 281K
Ice water 5 minutes 5 C° 41.0 F° 278K

Object Estimated mass
(g) Actual mass
(g) Actual mass
(Kg)
Mechanical pencil 4g 5.55g .00555kg
3 pennies 9g 8.7g .0087 kg
1 quarter 6g-7g 5.75g .00575 kg
2 quarters, 3 dimes 13g 18.3g .0183 kg
4 dimes, 5 pennies 20g 18.45g .01845 kg
3 quarters, 1 dime, 5 pennies 28g 34.0g .034 kg
Key 6g-7g 7.65g .00765 kg
Key, 1quarter, 4 pennies 25g 24.55g .02455 kg

Mass
A Mass
B Mass
B-A
Liquid Volume
(ml) Graduated cylinder
(g) Graduated cylinder
Liquid (g) Liquid
(g) Density g/ml % Error
Water 5ml 18.85g 23.4g 4.55g 0.91g/ml
Isopropyl alcohol 5ml 18.85g 23.0g 4.15g 0.83g/ml

Object Mass
(g) Length
(cm) Width
(cm) Height
(cm) Volume
(cm3) Density
(g/ cm3)
Magnet 4.35g 2.55cm .6cm .6cm .918 cm3 4.74g/cm3

Object Mass
(g) Initial volume of Graduated cylinder
(ml) Final volume of Graduated cylinder
(ml) Object volume
(ml) Density
(g/ml)
Magnet 4.35g 7ml 7.75ml .75ml 5.8 g/ml
Metal bolt 7ml 8.25ml 1.25ml 3.5 g/ml

Mass
(g) Mass of displaced water
(g) Volume of displaced water
(ml) Density
(g/ml)
Magnet 4.35
Metal bolt 8g

Chemical Mass
(g) Molecular weight
(g) Moles in volumetric flask Total volume
(L) Molarity
(mol/L)
Sugar
C12H22O11 8g 342.22g .0234 .025L .936

Volume
(ml) Mass
(g) Density
(g/ml) Initial concentration
(M) Volume transferred
(ml) Final concentration
(M)
0 25ml 27.2g 1.088g/ml 0.0ml .936
1 25ml 24.7g .988 g/ml .936M 2.5ml .0932
2 25ml 24.4g .976 g/ml .0932M 4.5ml .0168
3 25ml 24.35g .974 g/ml .0168M 3.0ml .002016
4 25ml 24.6g .984 g/ml .002016M 6.0ml